before text
\sixthlevel[
	opt arg
	opt arg
	opt arg]
[ another opt arg
	another opt arg
	another opt arg
]
%
{
	\fifthlevel[
		optional argument
		optional argument
		optional argument
		optional argument
	]
	{
		\newlevel{          % 4
			body goes here
			\mycommand{         % 2
				argument text
				argument text
				argument text
				\nested[        % 1
				first opt-arg]
				{
				first mand arg
				\fourthcommand{
					fourth command argument body
					fourth command argument body
					fourth command argument body
				}
				}
			} after text
			\anothercommand{    % 3
				another argument text
				another argument text
				another argument text
			}% after text
		}
	}
}
